package file;

import java.io.File;

public class ListFilesDemo {
    public static void main(String[] args) {
        File file = new File("./");
        if(file.isDirectory()){
            File[] subs = file.listFiles();
            System.out.println("一共："+subs.length+"个子项");
            for (File sub : subs) {
                System.out.println(sub.getName());
            }
        }
    }
}
